I have a problem with what I'll call "noise bands" that are horizontal but with no defined shape. They flicker and are most noticeable in low light conditions especially in vc. When the screen is relatively light the problem virtually goes away. The problem has always been there since I built the pc last December and just didn't fly at night but I'd like to get to the bottom of it. The monitor is a Samsung SyncMaster 920N and the video card is a GF8800GTX. The question is faulty video card or monitor or any possible causes.